Why Use 3D Scanning Over Traditional CMM & Tactile Measurement Systems

Dec 14, 2021 | 3D Scanning, Quality & Inspection

A Blog from our colleagues at T3DMC explains how the world of metrology is changing and 3D scanning for measurement and inspection is now used across a broad range of industries as a preferred method of obtaining accurate 3D data for a wide range of applications.

Data captured by 3D scanning is full field, meaning it covers the entire surface of the component. This provides a comprehensive inspection and analysis across the entire surface of the part. The reports produced using 3D scanning provide powerful data which can be used to evaluate the performance of the component across the complete surface. When compared with traditional single point tactile measurements, the full surface data contains far more detailed information which can be presented in a simple and easy to understand format.

Further advantages of 3D scanning include vast improvements in measurement process, almost complete removal of fixture requirements, significantly increased flexibility, and portability of measurement.

3D scan data is used to create colour plots (or heat maps as they are sometimes referred as) to inspect the full surface geometry of the component. The scan data can be used to create a detailed report which can highlight the deviation of complex freeform surfaces, geometric elements and GD&T features against the CAD nominal or the master sample.

3D scanning systems have a further advantage over traditional CMM equipment as parts can be measured without the need for fixtures and the scanning system can be brought to the part rather than the part being brought to the measurement device and fixed into position. 3D scanning equipment is portable in most cases which enables components, machines, fixtures, tooling etc to be measured in situ and this is not possible for most traditional CMM equipment.

3D scanning systems are now in use across many industries and in particular the Automotive and Aerospace Industries where manufacturers are well known for applying exacting standards of accuracy on both their own systems and also that of their respective supply chains.

One final advantage of 3D scanning is relating to the comprehensive data capture from the system. As many industries progress towards Industry 4.0 and the need for full field measurement data for all parts incorporated in either manufacturing or assembly situations, the data produced from 3D scanning can be used for either batch or continuous production of components.

This data can be used as part of virtual assembly simulations which form a key element of developing “factories of the future” with experts predicting that the need for full field data will cascade down the supply chain for all parts used across a range of Industries to ensure that consistent quality and repeatability are achieved reducing risk of failures to Six Sigma levels.

See the full T3DMC Blog here.

About The Blog

The PES Scanning blog provides information and news on the scanning and engineering services we offer. The blog also includes views from our team and information about projects we’ve been working on.